AquaChem 05605AQU Pool Chemical, 5 lb Jug

A properly balanced pool means the water has the right pH, total alkalinity and calcium hardness levels. Proper balancing helps your chemicals such as chlorine to work more effectively, saving you money by reducing the amount of product you need over time. pH Down is required if water testing results indicate a pH greater than 7.8. High levels of pH can create cloudy water, irritate swimmers skin, form scale on equipment and surfaces and make chlorine less effective.